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y=kx
y=42 when x=70
Work out the value of k to 1 d.p

Sagot :

Darianidn

Answer:

[tex]\huge\boxed{k=0.6}[/tex]

Step-by-step explanation:

As we know that y=42 when x=70 we can substitute them into the equation y=kx, giving us 42=70k. From here, we can rearrange the equation to make k the subject, this can be done by dividing 42 by 70, giving us 0.6 to 1 decimal place.

1) Substitute into the equation.

[tex]42=70k[/tex]

2) Rearrange for k.

[tex]k=\frac{42}{70}[/tex]

3) Calculate value.

[tex]k=0.6[/tex]

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