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Fill in the gradient and [tex]\( y \)[/tex]-intercept for each equation.

\begin{tabular}{|c|l|l|}
\hline
Equation & Gradient & [tex]$y$[/tex]-intercept \\
\hline
[tex]$y=5x+5$[/tex] & 5 & 5 \\
\hline
[tex]$y=\frac{4}{2}x+4$[/tex] & 2 & 4 \\
\hline
[tex]$y=-\frac{1}{3}x-1$[/tex] & [tex]$-\frac{1}{3}$[/tex] & -1 \\
\hline
\end{tabular}


Sagot :

Sure! Let's determine the gradients (slopes) and [tex]\( y \)[/tex]-intercepts for each equation step-by-step.

1. Equation [tex]\( y = 5x + 5 \)[/tex]:

- The equation is already in the slope-intercept form [tex]\( y = mx + b \)[/tex], where [tex]\( m \)[/tex] is the gradient and [tex]\( b \)[/tex] is the [tex]\( y \)[/tex]-intercept.
- Here, the gradient [tex]\( m \)[/tex] is [tex]\( 5 \)[/tex].
- The [tex]\( y \)[/tex]-intercept [tex]\( b \)[/tex] is [tex]\( 5 \)[/tex].

So, for [tex]\( y = 5x + 5 \)[/tex]:
- Gradient: [tex]\( 5 \)[/tex]
- [tex]\( y \)[/tex]-intercept: [tex]\( 5 \)[/tex]

2. Equation [tex]\( y = \frac{4}{2}x + 4 \)[/tex]:

- Simplify the fraction [tex]\( \frac{4}{2} \)[/tex]:
[tex]\[ \frac{4}{2} = 2 \][/tex]
- So, the equation becomes [tex]\( y = 2x + 4 \)[/tex].
- In this form, the gradient [tex]\( m \)[/tex] is [tex]\( 2 \)[/tex].
- The [tex]\( y \)[/tex]-intercept [tex]\( b \)[/tex] is [tex]\( 4 \)[/tex].

So, for [tex]\( y = 2x + 4 \)[/tex]:
- Gradient: [tex]\( 2 \)[/tex]
- [tex]\( y \)[/tex]-intercept: [tex]\( 4 \)[/tex]

3. Equation [tex]\( y = -\frac{1}{3}x - 1 \)[/tex]:

- This equation is already in the form [tex]\( y = mx + b \)[/tex], where [tex]\( m \)[/tex] is the gradient and [tex]\( b \)[/tex] is the [tex]\( y \)[/tex]-intercept.
- Here, the gradient [tex]\( m \)[/tex] is [tex]\( -\frac{1}{3} \)[/tex].
- The [tex]\( y \)[/tex]-intercept [tex]\( b \)[/tex] is [tex]\( -1 \)[/tex].

So, for [tex]\( y = -\frac{1}{3}x - 1 \)[/tex]:
- Gradient: [tex]\( -\frac{1}{3} \)[/tex]
- [tex]\( y \)[/tex]-intercept: [tex]\( -1 \)[/tex]

Now, let's fill in the table with the gradients and [tex]\( y \)[/tex]-intercepts:

[tex]\[ \begin{array}{|c|c|c|} \hline \text{Equation} & \text{Gradient} & y\text{-intercept} \\ \hline y = 5x + 5 & 5 & 5 \\ \hline y = \frac{4}{2}x + 4 & 2 & 4 \\ \hline y = -\frac{1}{3}x - 1 & -\frac{1}{3} & -1 \\ \hline \end{array} \][/tex]