College Algebra Exam 1 with solved
questions
Midpoint Formula - answers(x1+x2/2, y1+y2/2)
Distance Formula - answersd = √[( x₂ - x₁)² + (y₂ - y₁)²]
slope formula - answersy2-y1/x2-x1
slope-intercept form - answersy = mx + b
point slope form - answersy - y1 = m(x - x1)
vertical line equation - answersx = a, where a is the x-intercept. Slope is always
undefined.
Horizontal Line Equation - answersy = b, where b is the y-intercept. Slope is always 0.
Perpendicular Lines Theorem - answersSlope is the negative reciprocal of second line.
Parallel Lines Theorem - answersSlope is the same as second line. Use point-slope
formula to solve.
Linear equation distance - answersd=rt, set distances equal to solve.
Linear equation percentages - answersA% (amount at A%) + B% (amount at B%) =
Total% (amount at total %)
Perimeter - answersP = 2l + 2w
Area - answersA = lw
Volume - answersV = lwh
i^2 - answers-1
i - answerssquare root of -1
I-power - answersmust be even, if not make it even.
If the exponent is odd in imaginary number - answersanswer must be negative
questions
Midpoint Formula - answers(x1+x2/2, y1+y2/2)
Distance Formula - answersd = √[( x₂ - x₁)² + (y₂ - y₁)²]
slope formula - answersy2-y1/x2-x1
slope-intercept form - answersy = mx + b
point slope form - answersy - y1 = m(x - x1)
vertical line equation - answersx = a, where a is the x-intercept. Slope is always
undefined.
Horizontal Line Equation - answersy = b, where b is the y-intercept. Slope is always 0.
Perpendicular Lines Theorem - answersSlope is the negative reciprocal of second line.
Parallel Lines Theorem - answersSlope is the same as second line. Use point-slope
formula to solve.
Linear equation distance - answersd=rt, set distances equal to solve.
Linear equation percentages - answersA% (amount at A%) + B% (amount at B%) =
Total% (amount at total %)
Perimeter - answersP = 2l + 2w
Area - answersA = lw
Volume - answersV = lwh
i^2 - answers-1
i - answerssquare root of -1
I-power - answersmust be even, if not make it even.
If the exponent is odd in imaginary number - answersanswer must be negative
