Answer:
Point slope: y - 115 = 2(x -30)
Slope intercept: y = 2x + 55
Explanation:
I choice the first point to write the equation in the point slope form of a line.
(30,115)
Slope is the change in y over the change in x. I see that the y's are increasing by 10, while the x's are increasing by 5
10/5 = 2
The slope is 2
y = y = m( x + x)
y - 115 = 2(x - 30)
Slope intercept form of a line
We already found the slope to be 2. Use the slope and the point (30,115) to find x
y = mx + b
115 = 2(30) + b
115 = 30 + b Subtract 30 from both sides
55 = b
y = 2x + 55