No.149 Finding Equations from a Graph
POINT
Read the y-intercept first. Then use two points on the line to find the slope.
Example
The graph shows lines A, B and C. Find the equation of each line.
Find the equations of A, B and C.
A: \(y=2x+1\)
B: \(y=-x+3\)
C: \(y=\frac12x-2\)
B: \(y=-x+3\)
C: \(y=\frac12x-2\)
TRY
TRY 1
Find the equation of each line A and B in the graph.
A: \(y=2x+2\)
B: \(y=-x+3\)
B: \(y=-x+3\)