Exercises: Graphing and Connecting Representations

Where an equation is available, substitute rather than reading the graph. Substitution is exact; a graph is approximate.

Grade 10·18 problems·~34 min·Digital SAT Math·topic·sat-alg-lin2-graph

Work through problems with immediate feedback

Warm-Up: Review What You Know

These review reading a line and its intercepts.

To find where a line crosses the $y$ -axis, which substitution do you make?

Set $y = 0$ , since you are solving for the $y$ -intercept of the line.

Set both $x = 0$ and $y = 0$ , then solve the resulting system of equations.

Set $x = 0$ , since every point on the $y$ -axis has $x$ -coordinate zero.

Set $x = 1$ , since the intercept lies one step across from the origin.