What kind of roots does each parabola have? imaginary Real,unequal Real,equal
Which graph varies inversely?
What is the equation for a circle centered at the origin with a radius of 4?
How do you solve a radical Equation? Square both sides. Always check answers.
Any odd # Any even #
How do you find the intersection of two graphs on your calculator? 2nd, trace, intersect
How do you solve an absolute value equation? Two set ups: one positive, one negative. Always check answers!
What is the vertical line test for? To see if something is a function.
What does the graph of x = 2 look like? Is it a function? No.
What shape is the graph of ? A hyperbola.
What is the domain of Look at graph: Look at table:
What is the horizontal line test for? To see if a function is one-to-one. (That means its inverse is a function)
How do you find the points where a graph crosses the x axis on your calculator? Second, Trace, Zero
How do you solve an absolute value inequality? Two set ups one positive, one negative. Flip the inequality symbol on the negative one.
If how do you find all values of x in the interval ?
If you are given that and angle A is in quadrant III, how do you find ? Cos is neg in QIII
When you use the formula must be an angle in ________. radians
Give the set up for exactly 3 out of 5 successes if probability of success is .
For the normal distribution, approximately what percent of scores are within 1 standard deviation of the mean? 68%
What 3 types of equation must you always check your solutions? Absolute value Radical Fractional(for zeros in denominator)
If you are given three sides of a triangle and need to find one angle, what do you do? Law of Cosines!