Equation of a line from data
Linear functions and graphs · Stage 2
Recognize the pattern
Use y = mx + b; a point with x = 0 gives the intercept.
Useful ruley=mx+b
Build on: ALG-05
Try it before reading the solution
A line has slope 2 and passes through (0, 5). Write its equation.
This teaching example is original and is not an official SAT question.
Reasoning
Substitute m = 2 and b = 5.
Answery = 2x + 5
03 · Next step
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Practice questions remain in English, as on the SAT.