# Math 95

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1. Slope
• m=y2-y1
•      x2-x1
2. Slope-intercept form of a linear equation
y=mx+b
3. Point-slope form of a linear equation
y=m(x-x1)+y1
4. Standard form of a quadratic equation
ax2+bx2+c=0
5. Vertex form of a quadratic equation
y=a(x-h)2+k     (h,k) vertex
7. Difference of two squares
a2-b2=(a-b)(a+b)
8. Pythagorean Theorem
c2=a2+b2
9. Domain of a function
The set of all x-values of the ordered pairs in a relation
10. Range of a function
The set of all y-values of the ordered pairs in a relation
11. Vertex, Minimum, Maximum
The lowest point on the graph of a parabola that opens upward or the highest point on the graph of a parabola that opens downward
12. Imaginary number (i)
a number denoted i whose properties are i=√-1 and i2=-1
13. Zero-product Property
For all real numbers a and b , if ab=0, then a=0 or b=0 (or both)
14. Conjugate
The conjugate of a+bi is a-bi
15. Vertex formula (x-coordinate)
x=-b/2a
16. Completing square method