1) What is the midpoint formula? a) (x1+x2)/2, (y1+y2)/2 b) x1-x2, y1-y2 c) x1+x2, y1+y2 d) x1/x2, y1/y2 2) How to find the distance between two points? 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 3) What is the slope formula? a) (y2-y1)/(x2-x1) b) y2-y1 + x2-x1 c) x2/x1, y2/y1 d) x2-x1, y2-y1 4) Equation of a line in slope-intercept form? a) y = mx + b b) y = m/x + b c) y = mx - b d) y = m(x+b) 5) What is the x-intercept? a) Where line crosses x-axis b) Where line crosses y-axis c) Where line is vertical d) Where line is horizontal 6) What is the y-intercept? a) Where line crosses y-axis b) Where line crosses x-axis c) Where line is vertical d) Where line is horizontal 7) What is a vertical line's slope? a) Undefined b) Zero c) One d) Negative 8) What is a horizontal line's slope? a) Zero b) Undefined c) One d) Negative 9) What does 'm' represent in y=mx+b? a) Slope b) Y-intercept c) X-intercept d) Midpoint 10) What does 'b' represent in y=mx+b? a) Y-intercept b) Slope c) X-intercept d) Midpoint 11) How to find the slope from two points? a) (y2-y1)/(x2-x1) b) x2-x1/y2-y1 c) x2+y2/x1+y1 d) y2+y1/x2+x1 12) What is the equation of a vertical line? a) x = a b) y = a c) y = mx + b d) x = my + b 13) What is the equation of a horizontal line? a) y = b b) x = b c) y = mx + b d) x = my + b 14) What is the slope of y = 3x + 2? a) 3 b) 2 c) 0 d) 1 15) What is the y-intercept of y = 3x + 2? a) 2 b) 3 c) 0 d) 1 16) What is the x-intercept of y = 3x + 2? a) -2/3 b) 3/2 c) 0 d) 2/3 17) Find the midpoint of (2,3) and (4,5). a) (3,4) b) (2,4) c) (4,3) d) (3,3) 18) Find the distance between (1,2) and (4,6). a) 5 b) 4 c) 3 d) 6 19) What is the slope of a line parallel to y=2x+3? a) 2 b) 3 c) 0 d) 1 20) What is the slope of a line perpendicular to y=2x+3? a) -1/2 b) 2 c) 1/2 d) -2

COORDINATE GEOMETRY - GRADE 9

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