( - 45, 0)
to find the x-intercept let y = 0 in the equation
x = 0 → x = - 15
multiply both sides by 3
x = 3 × - 15 = - 45
x-intercept = ( - 45, 0)
Which expression is equivalent to sec²x - 1? A. cot²x B. tan²x C. CsC²x D. cos²x
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