The equation 10 + 3y = 90 is in standard form. This form tells us the x and y-
intercepts easily.
What are the x and y-intercepts?
O The x-intercept is (10,0) and the y-intercept is at (0,3).
• The x-intercept is (3,0) and the y-intercept is at (0,10).
• The x-intercept is (9,0) and the y-intercept is at (0,30).
• The x-intercept is (1/9,0) and the y-intercept is at (0, 1/30)
The x-intercept and y-intercept can be found by setting the other variable to 0 and solving for the remaining variable.
For the x-intercept, we set y = 0 and solve for x:
10 + 3(0) = 90
10 = 90
This is not true, so there is no x-intercept.
For the y-intercept, we set x = 0 and solve for y:
10 + 3y = 90
3y = 90 - 10
3y = 80
y = 80/3
So the y-intercept is at (0, 80/3).