Question on gradients of curvesWatch
I'm stuck on b. I looked at solution banks (https://activeteach-prod.resource.pe...b_p1_ex12a.pdf) and they just jumped right into the answer. My question is how did they get there? Was it all just trial and error/mental maths skills? Or is there a method?
You have not given the values you got in the table.
But if you plot those points for gradient verses x, you should see the gradient of the line is 2 and the y intercept is -2