# SAT Math Multiple Choice Question 801: Answer and Explanation

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**Question: 801**

**6.**

If the ordered pair (*x*, *y*) satisfies the system of equations above, what is the value of *y*?

- A. 0
- B. 7
- C. 10
- D. 11

**Correct Answer:** D

**Explanation:**

**D**

**Difficulty:** Medium

**Category:** Heart of Algebra / Systems of Linear Equations

**Strategic Advice:** When both equations in a system are written in the form *y* = *mx* + *b*, use substitution or graphing to find the solution to the system. Use whichever method gets you to the answer more quickly.

**Getting to the Answer:** Substitute the first expression for *y* into the second equation. Then clear the fractions by multiplying everything by 35 to make the numbers easier to work with, and solve for *x*:

The question asks for the value of *y*, so substitute 35 into either of the original equations and solve for *y*:, which is (D).