You can solve the equation 2x + 7 = 1 – x by graphing y = 2x + 7 and y = 1 – x and finding their point of intersection.
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Line graph with 2 lines. X, y axes numbers range from 10 to negative 10; both lines cross x, y axes; do not pass through origin; intersect at approximately (negative 2, 3). First line extends from bottom left to upper right quadrants; has equation: y = 2 x + 7. Second line extends from bottom right to upper left quadrants and has equation: y = 1 minus x.
CLEAR CHECK
Step 1
The solution of 2x + 7 = 1 – x is
.
Step 2
(-2, 3) is a solution of
.
Step 1:
The solution of 2x + 7 = 1 – x is (-2, 3).
Step 2:
(-2, 3) is a solution of both y = 2x + 7 and y = 1 – x.