Solve the system: y = |x|, y = 2x + 3Question 5Select one:a.(-1, 1)b.(1, 1)c.(2, 2)d.No solutione.None of these
Question
Solve the system: y = |x|, y = 2x + 3Question 5Select one:a.(-1, 1)b.(1, 1)c.(2, 2)d.No solutione.None of these
Solution
To solve the system of equations y = |x| and y = 2x + 3, we need to find the values of x and y that satisfy both equations simultaneously.
Step 1: Set the two equations equal to each other:
|x| = 2x + 3
Step 2: Solve for x. Since |x| is always positive or zero, and 2x + 3 is positive when x > -1.5, we'll break this into two cases:
Case 1: x = 2x + 3, which simplifies to -x = 3, so x = -3. However, this doesn't satisfy x > -1.5, so it's not a valid solution.
Case 2: -x = 2x + 3, which simplifies to 3x = -3, so x = -1.
Step 3: Substitute x = -1 into the original equations to solve for y:
y = |-1| = 1 y = 2(-1) + 3 = 1
So, the solution to the system of equations is (-1, 1), which corresponds to answer choice (a).
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