Algebra Exam

Question 1

Function

Answer 1

a relation between a set of inputs having one output each.

Question 2

Y Intercept

Answer 2

where the line of a graph crosses the y-axis, or what y is equal to when x is equal to 0.

Question 3

Formula of gradient

Answer 3

y2-y1/x2-x1

Question 4

Equation of straight line

Answer 4

y=mx+c

Question 5

m=

Answer 5

gradient

Question 6

Relation

Answer 6

any set of ordered pairs

Question 7

Domain

Answer 7

input (These are the values that you can put into a relation or function.) X

Question 8

Range

Answer 8

output (These are the values that come out as a result of the relation or function.) Y

Question 9

Vertical line test

Answer 9

a way to check if the relation is a function. if it intersects the graph at more than one point, its not a function.

Question 10

System of equations

Answer 10

a set of equations with the same variables

Question 11

Independant

Answer 11

exactly one solution

Question 12

Dependent

Answer 12

many solutions

Question 13

Inconsistent

Answer 13

no solutions

Question 14

Simultaneous equations

Answer 14

a set of equations that are solved together because they share common variables.

Question 15

a<0

Answer 15

concave down

Question 16

a>0

Answer 16

concave up

Question 17

Quadratic function

Answer 17

ax^2+bx+c=0

Question 18

vertex

Answer 18

the maximum turning point

Question 19

axis of symmetry

Answer 19

x= -b/2a
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Question 20

steps of graphing a function

Answer 20

1. concave up or down
2. y intercept
3. axis of symmetry
4. vertex
5. finding roots

Question 21

quadratic formula

Question 22

delta more than zero

Answer 22

two solutitons

Question 23

delta is less than zero

Answer 23

no solutions

Question 24

delta is 0

Answer 24

one solution