Question

Pick the correct equation for the line below:

y = x2 + 90
y = 3 x + 90
y = 90x - 10
y = -10x + 90

Answer 1

Answer is y = -10x + 90

Using the rise/run method, you can see that the gradient is 10/1, or just 10. The gradient would be negative because if the line went the other way, it would be positive (Idk how else to explain this better sorry lol)

The line intercepts the y-axis at 90, so the y-intercept would be +90.

Hope this helps c: