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Elementary and Intermediate Algebra
Mark Dugopolski, Southeastern Louisiana University
Linear Equations in Two Variables and Their Graphs
The Point-Slope Form
Warm-Ups
1
The formula y = m(x - x1) is the point-slope form for a line.
A)
TRUE
B)
FALSE
2
It is impossible to find the equation of a line through (2, 5) and (-3, 1).
A)
TRUE
B)
FALSE
3
The point-slope form will not work for the line through (3, 4) and (3, 6).
A)
TRUE
B)
FALSE
4
The equation of the line through the origin with slope 1 is y = x.
A)
TRUE
B)
FALSE
5
The slope of the line 5x + y = 4 is 5.
A)
TRUE
B)
FALSE
6
The slope of any line perpendicular to the line y = 4x - 3 is -1/4.
A)
TRUE
B)
FALSE
7
The slope of any line parallel to the line x + y = 1 is -1.
A)
TRUE
B)
FALSE
8
The line 2x + y = -1 goes through the point (-2, -3).
A)
TRUE
B)
FALSE
9
The line is 2x + y = 4 and y = -2x + 7 are parallel.
A)
TRUE
B)
FALSE
10
The equation of the line through (0, 0) perpendicular to y = x is y = -x.
A)
TRUE
B)
FALSE
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