# SAT MATH VIDEOS(Part - 13)

Problem 1 :

The graph of the linear function f passes through the points (a, 1) and (1, b) in the xy-plane. If the slope of the graph of f is 1, which of the following is true?

A)  a - b = 1

B)  a + b = 1

C)  a - b = 2

D)  a + b = 2

Solution :

Problem 2 :

Johnny received m text messages on Friday, three less than twice as many text messages on Saturday than on Friday, and five more text messages on Sunday than on Saturday. What is the total number of text messages he received over the three days?

A)  4m + 2

B)  5m - 1

C)  4m - 2

D)  5m + 1

Solution :

Problem 3 :

If point (7, b) is in Quadrant I and point (a, -3) is in Quadrant III, in which Quadrant is the point (a, b)?

Solution :

Problem 4 :

On the number line above, if BC = 2AB, what is the value of x?

Solution :

Problem 5 :

If a = 4, b = -3 and c = 7, evaluate the following expression

Solution :

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