4 If two lines are perpendicular, what is true about their slopes? A Their product is -1 B They are equal C They are both undefined D Their sum is 0
5 What is the equation of a line with x-intercept 4 and y-intercept 3? A x/4 + y/3 = 1 B x/3 + y/4 = 1 C 4x + 3y = 1 D 3x + 4y = 12
8 The locus of points equidistant from two intersecting lines is: A A circle B An angle bisector C A straight line D A pair of angle bisectors
10 The distance between (x1, y1) and (x2, y2) is given by: A √[(x2-x1)² + (y2-y1)²] B √[(x2+x1)² + (y2+y1)²] C |x2-x1| + |y2-y1| D √[(x2-x1)² - (y2-y1)²]
13 What is the equation of the line passing through (0, 0) with slope 5? A y = 5x B y = x/5 C y = 5x + 1 D y = 5
17 What is the normal form of the equation of a straight line? A x cos α + y sin α = p B y = mx + c C x/a + y/b = 1 D ax + by + c = 0
18 What is the sum of interior angles of a regular polygon with 12 sides? A 1800° B 2160° C 1440° D 1620°