This is the answer to question 26 from the SAT Digital Practice Test 1, Module 1, Section 2. The question is "2x+3y=7 10x+15y=35 For each real number r, which of the following points lies on the graph of each equation in the xy-plane for the given system?" This problem involves lines, systems of equations, variables, solving for variables, and problem solving. Calculators ARE allowed on this section. This practice test is provided for free by the College Board. This video will show you how to do this problem and the logic behind it.

For a video with the answers to ALL the questions in this section, click here:    • SAT Digital Practice Test #1 MATH Mod...  

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