math tough assesment Flashcards
what does mx stand for in y=mx+b
the slope (gradient
what does b stand for in y=mx+b
the y-intercept
how do you find the gradient
x2-x1
what does the first number stand for in 4n+X
the first number is the change in the sequence (the number isnt always 4 just an example
what does the n stand for 4n+X
the number of the term so if its the 3rd term in a sequence n would be 3
what does x stand for in 4n+X
the first term in a sequence subtracted by the first number in the nth term
what does f stand for in f(x)=3x+2
the name of the function
what does x stand for in F(x)=3x+2
the input or the domain
what does the 2 numbers stand for in F(x)=3x+2
the function
how do you find exact center of a line
x1+x2. y1+y2
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2. 2
what is the distance formula (finding C in Pythagoras )
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__ / (x2-x1). +(y2-y1)
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when are lines parellel
when they both have the same gradient
m1=m2
when are lines perpindicular(intersecting to make a right angle
m1 times m2 = -1
how do you find c
first find m then substitute one of the sets of coordinates and solve
how do you solve inequalities
treat them like equations
when do you flip the signs for inequalites
if you multiply or divide by negative numbers
