exam Maths Puzzle Numerical Ability

Solve the following algebraic equations graphically on graph paper.

Graph y = 5x - 2
Graph 3x - 1 = 5x - y
Graph y = |x| + 3
Graph x + 2 = 2x - 1

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exam Other Question

directions: write a rational number in simplest form for decimal expansion. my decimal expansion is 1.290 with a line over 90 to make it repeating. my fraction was 71/55. am i correct? The best base to determine the solution to 2^2x + 1 = 4^x is:
@ Since 4 is a multiple power of 2, 2 is the best base.
a. b = 10
b. b = 2
c. b = e
d. None of the above, there is no solution to the problem