Question

I’m struggling to understand the next part cause I thought it was 28 but I guess not

Answer 1

The equation of a straight line is given in the form:

$y=mx+b$

where m is the slope and b is the intercept on the y axis.

The question already provides the value of the slope to be:

$m=28$

Therefore, the value of b can be gotten by substituting any pair of x and y values into the equation:

$\begin{gathered} y=28x+b \\ Take\text{ }(x,y)=(1,28) \\ \therefore \\ 28=28(1)+b \\ 28=28+b \\ b=28-28 \\ b=0 \end{gathered}$

The unknown value is 0.

The equation will be:

$\begin{gathered} y=28x+0 \\ or \\ y=28x \end{gathered}$